1# Proto
 2
 3Proto/proto3 (Protocol Buffers definition language) support is available natively in Zed.
 4
 5- Tree Sitter: [coder3101/tree-sitter-proto](https://github.com/coder3101/tree-sitter-proto)
 6- Language Server: [protols](https://github.com/coder3101/protols)
 7
 8## Formatting
 9
10ProtoLS supports formatting if you have `clang-format` installed.
11
12```sh
13# MacOS:
14brew install clang-format
15# Ubuntu
16sudo apt-get install clang-format
17# Fedora
18sudo dnf install clang-tools-extra
19```
20
21To customize your formatting preferences, create a `.clang-format` file, e.g.:
22
23```clang-format
24IndentWidth: 4
25ColumnLimit: 120
26```
27
28Or you can have zed directly invoke `clang-format` by specifying it as a [formatter](https://zed.dev/docs/configuring-zed#formatter) in your settings:
29
30```json
31  "languages": {
32    "Proto": {
33      "format_on_save": "on",
34      "tab_size": 4,
35      "formatter": {
36        "external": {
37          "command": "clang-format",
38          "arguments": ["-style={IndentWidth: 4, ColumnLimit: 0}"]
39        }
40      }
41    },
42  }
43```